I'm pasting it here as they typically delete the beta forums after release.

Dimensional Rifts will inherit their master's crit chance.

Artifact traits that buff an ability which is replaced/removed by a talent will instead buff that talent, typically. The Imp-related traits for Destruction likely don't yet, but eventually will, buff Grimoire of Sacrifice/Supremacy.

It does scale with your crit chance, not with your mastery or artifact traits that buff your Chaos Bolt.

Q: On the topic of pet multipliers, it appears dimensional rifts are functionally pets. They benefit from the orc racial command, and also don't benefit from mana tap/soul harvest. Is that the intended behavior?

A: Yes, Dimensional Rifts are effectively short-lived pets.

Kommentar von Nagoragama

Come on now, this is how we got a blown up Draenor!

Kommentar von kerrymayall

Unfortunately, due to the nature of this ability, you don't get to cleave a 2nd target with Havoc using this ability.

Chaos Portal and Shadow Tear also scale with haste. Chaos Portal gains an additional bolt for every 4.55% haste, while Shadow Tear gains one for every 14.29% haste. All 3 portals scale equally with crit.

Since all 3 have an equal chance of occurring, your average damage per portal with no secondary stats is 1203.3% SP.